Lily Pipe Outlet 13mm

The glass lily pipe outlet creates a smooth, laminar surface current that skims across the water surface without breaking it violently. This distinguishes it from spray bars and standard outlet nozzles, making it the outlet of choice in CO2-injected planted aquariums where strong surface agitation would degas CO2 and undermine plant growth. The curved glass tulip head distributes the return flow horizontally across the surface, improving gas exchange subtly while maintaining the CO2 balance required for lush plant growth. The transparent borosilicate glass disappears visually against the tank background, preserving the clean aesthetic of a nature aquarium. Pairs with the 13mm glass lily pipe inlet for a complete glass plumbing set.